2 * X11DRV OEM bitmap objects
4 * Copyright 1994, 1995 Alexandre Julliard
10 #ifndef X_DISPLAY_MISSING
18 #include "debugtools.h"
26 DEFAULT_DEBUG_CHANNEL(palette);
28 /* Palette indexed mode:
29 * logical palette -> mapping -> pixel
32 * Windows needs contiguous color space ( from 0 to n ) but
33 * it is possible only with the private colormap. Otherwise we
34 * have to map DC palette indices to real pixel values. With
35 * private colormaps it boils down to the identity mapping. The
36 * other special case is when we have a fixed color visual with
37 * the screendepth > 8 - we abandon palette mappings altogether
38 * because pixel values can be calculated without X server
41 * Windows palette manager is described in the
42 * http://premium.microsoft.com/msdn/library/techart/f30/f34/f40/d4d/sa942.htm
45 extern PALETTEENTRY *COLOR_sysPal;
46 extern int COLOR_gapStart;
47 extern int COLOR_gapEnd;
48 extern int COLOR_gapFilled;
51 extern const PALETTEENTRY COLOR_sysPalTemplate[NB_RESERVED_COLORS];
53 Colormap X11DRV_PALETTE_PaletteXColormap = 0;
54 UINT16 X11DRV_PALETTE_PaletteFlags = 0;
56 static int X11DRV_PALETTE_Redshift = 0; /* to handle abortive X11DRV_PALETTE_VIRTUAL visuals */
57 static int X11DRV_PALETTE_Redmax = 0;
58 static int X11DRV_PALETTE_Greenshift = 0;
59 static int X11DRV_PALETTE_Greenmax = 0;
60 static int X11DRV_PALETTE_Blueshift = 0;
61 static int X11DRV_PALETTE_Bluemax = 0;
62 static int X11DRV_PALETTE_Graymax = 0;
64 /* First free dynamic color cell, 0 = full palette, -1 = fixed palette */
65 static int X11DRV_PALETTE_firstFree = 0;
66 static unsigned char X11DRV_PALETTE_freeList[256];
68 /**********************************************************************/
70 /* Map an EGA index (0..15) to a pixel value in the system color space. */
72 int X11DRV_PALETTE_mapEGAPixel[16];
74 /**********************************************************************/
76 #define NB_COLORCUBE_START_INDEX 63
78 /* Maps entry in the system palette to X pixel value */
79 int *X11DRV_PALETTE_PaletteToXPixel = NULL;
81 /* Maps pixel to the entry in the system palette */
82 int *X11DRV_PALETTE_XPixelToPalette = NULL;
84 /**********************************************************************/
86 static BOOL X11DRV_PALETTE_BuildPrivateMap(void);
87 static BOOL X11DRV_PALETTE_BuildSharedMap(void);
88 static void X11DRV_PALETTE_ComputeShifts(unsigned long maskbits, int *shift, int *max);
89 static void X11DRV_PALETTE_FillDefaultColors(void);
90 static void X11DRV_PALETTE_FormatSystemPalette(void);
91 static BOOL X11DRV_PALETTE_CheckSysColor(COLORREF c);
92 static int X11DRV_PALETTE_LookupSystemXPixel(COLORREF col);
94 /***********************************************************************
97 * Initialize color management.
99 BOOL X11DRV_PALETTE_Init(void)
101 int mask, white, black;
104 Visual *visual = X11DRV_GetVisual();
106 TRACE("initializing palette manager...\n");
108 white = WhitePixelOfScreen( X11DRV_GetXScreen() );
109 black = BlackPixelOfScreen( X11DRV_GetXScreen() );
111 for( mask = 1; !((white & mask)^(black & mask)); mask <<= 1 )
113 X11DRV_PALETTE_PaletteFlags = (white & mask) ? X11DRV_PALETTE_WHITESET : 0;
114 X11DRV_DevCaps.sizePalette = visual->map_entries;
116 switch(visual->class)
119 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_VIRTUAL;
122 if (PROFILE_GetWineIniBool( "x11drv", "PrivateColorMap", 0 ))
124 XSetWindowAttributes win_attr;
126 X11DRV_PALETTE_PaletteXColormap = TSXCreateColormap( display, X11DRV_GetXRootWindow(),
128 if (X11DRV_PALETTE_PaletteXColormap)
130 X11DRV_PALETTE_PaletteFlags |= (X11DRV_PALETTE_PRIVATE | X11DRV_PALETTE_WHITESET);
133 for( white = X11DRV_DevCaps.sizePalette - 1; !(white & 1); white >>= 1 )
136 if( X11DRV_GetXRootWindow() != DefaultRootWindow(display) )
138 win_attr.colormap = X11DRV_PALETTE_PaletteXColormap;
139 TSXChangeWindowAttributes( display, X11DRV_GetXRootWindow(),
140 CWColormap, &win_attr );
145 X11DRV_PALETTE_PaletteXColormap = DefaultColormapOfScreen( X11DRV_GetXScreen() );
149 X11DRV_PALETTE_PaletteXColormap = DefaultColormapOfScreen( X11DRV_GetXScreen() );
150 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_FIXED;
151 X11DRV_PALETTE_Graymax = (1 << X11DRV_GetDepth())-1;
155 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_VIRTUAL;
157 int *depths,nrofdepths;
158 /* FIXME: hack to detect XFree32 XF_VGA16 ... We just have
161 depths=TSXListDepths(display,DefaultScreen(display),&nrofdepths);
162 if ((nrofdepths==2) && ((depths[0]==4) || depths[1]==4)) {
164 for( white = X11DRV_DevCaps.sizePalette - 1; !(white & 1); white >>= 1 )
166 X11DRV_PALETTE_PaletteFlags = (white & mask) ? X11DRV_PALETTE_WHITESET : 0;
167 X11DRV_PALETTE_PaletteXColormap = DefaultColormapOfScreen( X11DRV_GetXScreen() );
172 X11DRV_PALETTE_PaletteXColormap = DefaultColormapOfScreen( X11DRV_GetXScreen() );
173 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_FIXED;
174 X11DRV_PALETTE_ComputeShifts(visual->red_mask, &X11DRV_PALETTE_Redshift, &X11DRV_PALETTE_Redmax);
175 X11DRV_PALETTE_ComputeShifts(visual->green_mask, &X11DRV_PALETTE_Greenshift, &X11DRV_PALETTE_Greenmax);
176 X11DRV_PALETTE_ComputeShifts(visual->blue_mask, &X11DRV_PALETTE_Blueshift, &X11DRV_PALETTE_Bluemax);
181 TRACE(" visual class %i (%i)\n", visual->class, monoPlane);
183 memset(X11DRV_PALETTE_freeList, 0, 256*sizeof(unsigned char));
185 if (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_PRIVATE)
186 X11DRV_PALETTE_BuildPrivateMap();
188 X11DRV_PALETTE_BuildSharedMap();
190 /* Build free list */
192 if( X11DRV_PALETTE_firstFree != -1 )
193 X11DRV_PALETTE_FormatSystemPalette();
195 X11DRV_PALETTE_FillDefaultColors();
197 if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
198 X11DRV_DevCaps.sizePalette = 0;
201 X11DRV_DevCaps.rasterCaps |= RC_PALETTE;
202 X11DRV_DevCaps.sizePalette = visual->map_entries;
208 /***********************************************************************
209 * X11DRV_PALETTE_Cleanup
211 * Free external colors we grabbed in the FillDefaultPalette()
213 void X11DRV_PALETTE_Cleanup(void)
215 if( COLOR_gapFilled )
216 TSXFreeColors(display, X11DRV_PALETTE_PaletteXColormap,
217 (unsigned long*)(X11DRV_PALETTE_PaletteToXPixel + COLOR_gapStart),
221 /***********************************************************************
222 * X11DRV_PALETTE_ComputeShifts
224 * Calculate conversion parameters for direct mapped visuals
226 static void X11DRV_PALETTE_ComputeShifts(unsigned long maskbits, int *shift, int *max)
237 for(i=0;!(maskbits&1);i++)
244 /***********************************************************************
245 * X11DRV_PALETTE_BuildPrivateMap
247 * Allocate colorcells and initialize mapping tables.
249 static BOOL X11DRV_PALETTE_BuildPrivateMap(void)
251 /* Private colormap - identity mapping */
256 COLOR_sysPal = (PALETTEENTRY*)xmalloc(sizeof(PALETTEENTRY)*X11DRV_DevCaps.sizePalette);
258 TRACE("Building private map - %i palette entries\n", X11DRV_DevCaps.sizePalette);
260 /* Allocate system palette colors */
262 for( i=0; i < X11DRV_DevCaps.sizePalette; i++ )
264 if( i < NB_RESERVED_COLORS/2 )
266 color.red = COLOR_sysPalTemplate[i].peRed * 65535 / 255;
267 color.green = COLOR_sysPalTemplate[i].peGreen * 65535 / 255;
268 color.blue = COLOR_sysPalTemplate[i].peBlue * 65535 / 255;
269 COLOR_sysPal[i] = COLOR_sysPalTemplate[i];
271 else if( i >= X11DRV_DevCaps.sizePalette - NB_RESERVED_COLORS/2 )
273 int j = NB_RESERVED_COLORS + i - X11DRV_DevCaps.sizePalette;
274 color.red = COLOR_sysPalTemplate[j].peRed * 65535 / 255;
275 color.green = COLOR_sysPalTemplate[j].peGreen * 65535 / 255;
276 color.blue = COLOR_sysPalTemplate[j].peBlue * 65535 / 255;
277 COLOR_sysPal[i] = COLOR_sysPalTemplate[j];
280 color.flags = DoRed | DoGreen | DoBlue;
282 TSXStoreColor(display, X11DRV_PALETTE_PaletteXColormap, &color);
284 /* Set EGA mapping if color is from the first or last eight */
287 X11DRV_PALETTE_mapEGAPixel[i] = color.pixel;
288 else if (i >= X11DRV_DevCaps.sizePalette - 8 )
289 X11DRV_PALETTE_mapEGAPixel[i - (X11DRV_DevCaps.sizePalette - 16)] = color.pixel;
292 X11DRV_PALETTE_XPixelToPalette = X11DRV_PALETTE_PaletteToXPixel = NULL;
294 COLOR_gapStart = 256; COLOR_gapEnd = -1;
296 X11DRV_PALETTE_firstFree = (X11DRV_DevCaps.sizePalette > NB_RESERVED_COLORS)?NB_RESERVED_COLORS/2 : -1;
301 /***********************************************************************
302 * X11DRV_PALETTE_BuildSharedMap
304 * Allocate colorcells and initialize mapping tables.
306 static BOOL X11DRV_PALETTE_BuildSharedMap(void)
309 unsigned long sysPixel[NB_RESERVED_COLORS];
310 unsigned long* pixDynMapping = NULL;
311 unsigned long plane_masks[1];
313 int diff, r, g, b, max = 256, bp = 0, wp = 1;
316 /* read "AllocSystemColors" from wine.conf */
318 COLOR_max = PROFILE_GetWineIniInt( "x11drv", "AllocSystemColors", 256);
319 if (COLOR_max > 256) COLOR_max = 256;
320 else if (COLOR_max < 20) COLOR_max = 20;
321 TRACE("%d colors configured.\n", COLOR_max);
323 TRACE("Building shared map - %i palette entries\n", X11DRV_DevCaps.sizePalette);
325 /* Be nice and allocate system colors as read-only */
327 for( i = 0; i < NB_RESERVED_COLORS; i++ )
329 color.red = COLOR_sysPalTemplate[i].peRed * 65535 / 255;
330 color.green = COLOR_sysPalTemplate[i].peGreen * 65535 / 255;
331 color.blue = COLOR_sysPalTemplate[i].peBlue * 65535 / 255;
332 color.flags = DoRed | DoGreen | DoBlue;
334 if (!TSXAllocColor( display, X11DRV_PALETTE_PaletteXColormap, &color ))
340 WARN("Not enough colors for the full system palette.\n");
342 bp = BlackPixel(display, DefaultScreen(display));
343 wp = WhitePixel(display, DefaultScreen(display));
345 max = (0xffffffff)>>(32 - X11DRV_GetDepth());
353 /* reinit color (XAllocColor() may change it)
354 * and map to the best shared colorcell */
356 color.red = COLOR_sysPalTemplate[i].peRed * 65535 / 255;
357 color.green = COLOR_sysPalTemplate[i].peGreen * 65535 / 255;
358 color.blue = COLOR_sysPalTemplate[i].peBlue * 65535 / 255;
360 best.pixel = best.red = best.green = best.blue = 0;
361 for( c.pixel = 0, diff = 0x7fffffff; c.pixel < max; c.pixel += step )
363 TSXQueryColor(display, X11DRV_PALETTE_PaletteXColormap, &c);
364 r = (c.red - color.red)>>8;
365 g = (c.green - color.green)>>8;
366 b = (c.blue - color.blue)>>8;
368 if( r < diff ) { best = c; diff = r; }
371 if( TSXAllocColor(display, X11DRV_PALETTE_PaletteXColormap, &best) )
372 color.pixel = best.pixel;
373 else color.pixel = (i < NB_RESERVED_COLORS/2)? bp : wp;
376 sysPixel[i] = color.pixel;
378 TRACE("syscolor(%lx) -> pixel %i\n",
379 *(COLORREF*)(COLOR_sysPalTemplate+i), (int)color.pixel);
381 /* Set EGA mapping if color in the first or last eight */
384 X11DRV_PALETTE_mapEGAPixel[i] = color.pixel;
385 else if (i >= NB_RESERVED_COLORS - 8 )
386 X11DRV_PALETTE_mapEGAPixel[i - (NB_RESERVED_COLORS-16)] = color.pixel;
389 /* now allocate changeable set */
391 if( !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) )
393 int c_min = 0, c_max = X11DRV_DevCaps.sizePalette, c_val;
395 TRACE("Dynamic colormap... \n");
397 /* comment this out if you want to debug palette init */
399 TSXGrabServer(display);
401 /* let's become the first client that actually follows
402 * X guidelines and does binary search...
405 pixDynMapping = (unsigned long*)xmalloc(sizeof(long)*X11DRV_DevCaps.sizePalette);
406 while( c_max - c_min > 0 )
408 c_val = (c_max + c_min)/2 + (c_max + c_min)%2;
410 if( !TSXAllocColorCells(display, X11DRV_PALETTE_PaletteXColormap, False,
411 plane_masks, 0, pixDynMapping, c_val) )
415 TSXFreeColors(display, X11DRV_PALETTE_PaletteXColormap, pixDynMapping, c_val, 0);
420 if( c_min > COLOR_max - NB_RESERVED_COLORS)
421 c_min = COLOR_max - NB_RESERVED_COLORS;
423 c_min = (c_min/2) + (c_min/2); /* need even set for split palette */
426 if( !TSXAllocColorCells(display, X11DRV_PALETTE_PaletteXColormap, False,
427 plane_masks, 0, pixDynMapping, c_min) )
429 WARN("Inexplicable failure during colorcell allocation.\n");
433 X11DRV_DevCaps.sizePalette = c_min + NB_RESERVED_COLORS;
435 TSXUngrabServer(display);
437 TRACE("adjusted size %i colorcells\n", X11DRV_DevCaps.sizePalette);
439 else if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
441 /* virtual colorspace - ToPhysical takes care of
442 * color translations but we have to allocate full palette
443 * to maintain compatibility
445 X11DRV_DevCaps.sizePalette = 256;
446 TRACE("Virtual colorspace - screendepth %i\n", X11DRV_GetDepth());
448 else X11DRV_DevCaps.sizePalette = NB_RESERVED_COLORS; /* system palette only - however we can alloc a bunch
449 * of colors and map to them */
451 TRACE("Shared system palette uses %i colors.\n", X11DRV_DevCaps.sizePalette);
453 /* set gap to account for pixel shortage. It has to be right in the center
454 * of the system palette because otherwise raster ops get screwed. */
456 if( X11DRV_DevCaps.sizePalette >= 256 )
457 { COLOR_gapStart = 256; COLOR_gapEnd = -1; }
459 { COLOR_gapStart = X11DRV_DevCaps.sizePalette/2; COLOR_gapEnd = 255 - X11DRV_DevCaps.sizePalette/2; }
461 X11DRV_PALETTE_firstFree = ( X11DRV_DevCaps.sizePalette > NB_RESERVED_COLORS &&
462 (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL || !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED)) )
463 ? NB_RESERVED_COLORS/2 : -1;
465 COLOR_sysPal = (PALETTEENTRY*)HeapAlloc(GetProcessHeap(),0,sizeof(PALETTEENTRY)*256);
466 if(COLOR_sysPal == NULL) {
467 ERR("Can not allocate system palette!\n");
471 /* setup system palette entry <-> pixel mappings and fill in 20 fixed entries */
473 if (X11DRV_GetDepth() <= 8)
475 X11DRV_PALETTE_XPixelToPalette = (int*)calloc(256, sizeof(int));
476 if(X11DRV_PALETTE_XPixelToPalette == NULL) {
477 ERR("Out of memory: XPixelToPalette!\n");
482 /* for hicolor visuals PaletteToPixel mapping is used to skip
483 * RGB->pixel calculation in X11DRV_PALETTE_ToPhysical().
486 X11DRV_PALETTE_PaletteToXPixel = (int*)HeapAlloc(GetProcessHeap(),0,sizeof(int)*256);
487 if(X11DRV_PALETTE_PaletteToXPixel == NULL) {
488 ERR("Out of memory: PaletteToXPixel!\n");
492 for( i = j = 0; i < 256; i++ )
494 if( i >= COLOR_gapStart && i <= COLOR_gapEnd )
496 X11DRV_PALETTE_PaletteToXPixel[i] = 0;
497 COLOR_sysPal[i].peFlags = 0; /* mark as unused */
501 if( i < NB_RESERVED_COLORS/2 )
503 X11DRV_PALETTE_PaletteToXPixel[i] = sysPixel[i];
504 COLOR_sysPal[i] = COLOR_sysPalTemplate[i];
506 else if( i >= 256 - NB_RESERVED_COLORS/2 )
508 X11DRV_PALETTE_PaletteToXPixel[i] = sysPixel[(i + NB_RESERVED_COLORS) - 256];
509 COLOR_sysPal[i] = COLOR_sysPalTemplate[(i + NB_RESERVED_COLORS) - 256];
511 else if( pixDynMapping )
512 X11DRV_PALETTE_PaletteToXPixel[i] = pixDynMapping[j++];
514 X11DRV_PALETTE_PaletteToXPixel[i] = i;
516 TRACE("index %i -> pixel %i\n", i, X11DRV_PALETTE_PaletteToXPixel[i]);
518 if( X11DRV_PALETTE_XPixelToPalette )
519 X11DRV_PALETTE_XPixelToPalette[X11DRV_PALETTE_PaletteToXPixel[i]] = i;
522 if( pixDynMapping ) free(pixDynMapping);
527 /***********************************************************************
528 * Colormap Initialization
530 static void X11DRV_PALETTE_FillDefaultColors(void)
532 /* initialize unused entries to what Windows uses as a color
533 * cube - based on Greg Kreider's code.
537 int red, no_r, inc_r;
538 int green, no_g, inc_g;
539 int blue, no_b, inc_b;
541 if (X11DRV_DevCaps.sizePalette <= NB_RESERVED_COLORS)
543 while (i*i*i < (X11DRV_DevCaps.sizePalette - NB_RESERVED_COLORS)) i++;
544 no_r = no_g = no_b = --i;
545 if ((no_r * (no_g+1) * no_b) < (X11DRV_DevCaps.sizePalette - NB_RESERVED_COLORS)) no_g++;
546 if ((no_r * no_g * (no_b+1)) < (X11DRV_DevCaps.sizePalette - NB_RESERVED_COLORS)) no_b++;
547 inc_r = (255 - NB_COLORCUBE_START_INDEX)/no_r;
548 inc_g = (255 - NB_COLORCUBE_START_INDEX)/no_g;
549 inc_b = (255 - NB_COLORCUBE_START_INDEX)/no_b;
551 idx = X11DRV_PALETTE_firstFree;
554 for (blue = NB_COLORCUBE_START_INDEX; blue < 256 && idx; blue += inc_b )
555 for (green = NB_COLORCUBE_START_INDEX; green < 256 && idx; green += inc_g )
556 for (red = NB_COLORCUBE_START_INDEX; red < 256 && idx; red += inc_r )
560 if( red == NB_COLORCUBE_START_INDEX && green == red && blue == green ) continue;
562 COLOR_sysPal[idx].peRed = red;
563 COLOR_sysPal[idx].peGreen = green;
564 COLOR_sysPal[idx].peBlue = blue;
568 if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
570 if (X11DRV_PALETTE_Redmax != 255) no_r = (red * X11DRV_PALETTE_Redmax) / 255;
571 if (X11DRV_PALETTE_Greenmax != 255) no_g = (green * X11DRV_PALETTE_Greenmax) / 255;
572 if (X11DRV_PALETTE_Bluemax != 255) no_b = (blue * X11DRV_PALETTE_Bluemax) / 255;
574 X11DRV_PALETTE_PaletteToXPixel[idx] = (no_r << X11DRV_PALETTE_Redshift) | (no_g << X11DRV_PALETTE_Greenshift) | (no_b << X11DRV_PALETTE_Blueshift);
576 else if( !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) )
579 color.pixel = (X11DRV_PALETTE_PaletteToXPixel)? X11DRV_PALETTE_PaletteToXPixel[idx] : idx;
580 color.red = COLOR_sysPal[idx].peRed << 8;
581 color.green = COLOR_sysPal[idx].peGreen << 8;
582 color.blue = COLOR_sysPal[idx].peBlue << 8;
583 color.flags = DoRed | DoGreen | DoBlue;
584 TSXStoreColor(display, X11DRV_PALETTE_PaletteXColormap, &color);
586 idx = X11DRV_PALETTE_freeList[idx];
589 /* try to fill some entries in the "gap" with
590 * what's already in the colormap - they will be
591 * mappable to but not changeable. */
593 if( COLOR_gapStart < COLOR_gapEnd && X11DRV_PALETTE_XPixelToPalette )
598 max = COLOR_max - (256 - (COLOR_gapEnd - COLOR_gapStart));
599 for ( i = 0, idx = COLOR_gapStart; i < 256 && idx <= COLOR_gapEnd; i++ )
600 if( X11DRV_PALETTE_XPixelToPalette[i] == 0 )
604 TSXQueryColor(display, X11DRV_PALETTE_PaletteXColormap, &xc);
605 r = xc.red>>8; g = xc.green>>8; b = xc.blue>>8;
607 if( xc.pixel < 256 && X11DRV_PALETTE_CheckSysColor(RGB(r, g, b)) &&
608 TSXAllocColor(display, X11DRV_PALETTE_PaletteXColormap, &xc) )
610 X11DRV_PALETTE_XPixelToPalette[xc.pixel] = idx;
611 X11DRV_PALETTE_PaletteToXPixel[idx] = xc.pixel;
612 *(COLORREF*)(COLOR_sysPal + idx) = RGB(r, g, b);
613 COLOR_sysPal[idx++].peFlags |= PC_SYS_USED;
614 if( --max <= 0 ) break;
617 COLOR_gapFilled = idx - COLOR_gapStart;
622 /***********************************************************************
623 * X11DRV_PALETTE_ToLogical
625 * Return RGB color for given X pixel.
627 COLORREF X11DRV_PALETTE_ToLogical(int pixel)
632 /* truecolor visual */
634 if (X11DRV_GetDepth() >= 24) return pixel;
637 /* check for hicolor visuals first */
639 if ( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED && !X11DRV_PALETTE_Graymax )
641 color.red = (pixel >> X11DRV_PALETTE_Redshift) & X11DRV_PALETTE_Redmax;
642 color.green = (pixel >> X11DRV_PALETTE_Greenshift) & X11DRV_PALETTE_Greenmax;
643 color.blue = (pixel >> X11DRV_PALETTE_Blueshift) & X11DRV_PALETTE_Bluemax;
644 return RGB(MulDiv(color.red, 255, X11DRV_PALETTE_Redmax),
645 MulDiv(color.green, 255, X11DRV_PALETTE_Greenmax),
646 MulDiv(color.blue, 255, X11DRV_PALETTE_Bluemax));
649 /* check if we can bypass X */
651 if ((X11DRV_GetDepth() <= 8) && (pixel < 256) &&
652 !(X11DRV_PALETTE_PaletteFlags & (X11DRV_PALETTE_VIRTUAL | X11DRV_PALETTE_FIXED)) )
653 return ( *(COLORREF*)(COLOR_sysPal +
654 ((X11DRV_PALETTE_XPixelToPalette)?X11DRV_PALETTE_XPixelToPalette[pixel]:pixel)) ) & 0x00ffffff;
657 TSXQueryColor(display, X11DRV_PALETTE_PaletteXColormap, &color);
658 return RGB(color.red >> 8, color.green >> 8, color.blue >> 8);
661 /***********************************************************************
662 * X11DRV_PALETTE_ToPhysical
664 * Return the physical color closest to 'color'.
666 int X11DRV_PALETTE_ToPhysical( DC *dc, COLORREF color )
669 HPALETTE16 hPal = (dc)? dc->w.hPalette: STOCK_DEFAULT_PALETTE;
670 unsigned char spec_type = color >> 24;
671 PALETTEOBJ* palPtr = (PALETTEOBJ *) GDI_GetObjPtr( hPal, PALETTE_MAGIC );
673 /* palPtr can be NULL when DC is being destroyed */
674 if( !palPtr ) return 0;
676 if ( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED )
678 /* there is no colormap limitation; we are going to have to compute
679 * the pixel value from the visual information stored earlier
682 unsigned long red, green, blue;
687 case 1: /* PALETTEINDEX */
689 if( (idx = color & 0xffff) >= palPtr->logpalette.palNumEntries)
691 WARN("RGB(%lx) : idx %d is out of bounds, assuming black\n", color, idx);
692 GDI_HEAP_UNLOCK( hPal );
696 if( palPtr->mapping )
698 GDI_HEAP_UNLOCK( hPal );
699 return palPtr->mapping[idx];
701 color = *(COLORREF*)(palPtr->logpalette.palPalEntry + idx);
706 /* fall through to RGB */
709 if( dc && (dc->w.bitsPerPixel == 1) )
711 GDI_HEAP_UNLOCK( hPal );
712 return (((color >> 16) & 0xff) +
713 ((color >> 8) & 0xff) + (color & 0xff) > 255*3/2) ? 1 : 0;
718 red = GetRValue(color); green = GetGValue(color); blue = GetBValue(color);
720 if (X11DRV_PALETTE_Graymax)
722 /* grayscale only; return scaled value */
723 GDI_HEAP_UNLOCK( hPal );
724 return ( (red * 30 + green * 69 + blue * 11) * X11DRV_PALETTE_Graymax) / 25500;
728 /* scale each individually and construct the TrueColor pixel value */
729 if (X11DRV_PALETTE_Redmax != 255)
730 red = MulDiv(red, X11DRV_PALETTE_Redmax, 255);
731 if (X11DRV_PALETTE_Greenmax != 255)
732 green = MulDiv(green, X11DRV_PALETTE_Greenmax, 255);
733 if (X11DRV_PALETTE_Bluemax != 255)
734 blue = MulDiv(blue, X11DRV_PALETTE_Bluemax, 255);
736 GDI_HEAP_UNLOCK( hPal );
737 return (red << X11DRV_PALETTE_Redshift) | (green << X11DRV_PALETTE_Greenshift) | (blue << X11DRV_PALETTE_Blueshift);
743 if( !palPtr->mapping )
744 WARN("Palette %04x is not realized\n", dc->w.hPalette);
746 switch(spec_type) /* we have to peruse DC and system palette */
750 /* fall through to RGB */
753 if( dc && (dc->w.bitsPerPixel == 1) )
755 GDI_HEAP_UNLOCK( hPal );
756 return (((color >> 16) & 0xff) +
757 ((color >> 8) & 0xff) + (color & 0xff) > 255*3/2) ? 1 : 0;
760 index = COLOR_PaletteLookupPixel( COLOR_sysPal, 256,
761 X11DRV_PALETTE_PaletteToXPixel, color, FALSE);
763 /* TRACE(palette,"RGB(%lx) -> pixel %i\n", color, index);
766 case 1: /* PALETTEINDEX */
767 index = color & 0xffff;
769 if( index >= palPtr->logpalette.palNumEntries )
770 WARN("RGB(%lx) : index %i is out of bounds\n", color, index);
771 else if( palPtr->mapping ) index = palPtr->mapping[index];
773 /* TRACE(palette,"PALETTEINDEX(%04x) -> pixel %i\n", (WORD)color, index);
776 case 2: /* PALETTERGB */
777 index = COLOR_PaletteLookupPixel( palPtr->logpalette.palPalEntry,
778 palPtr->logpalette.palNumEntries,
779 palPtr->mapping, color, FALSE);
780 /* TRACE(palette,"PALETTERGB(%lx) -> pixel %i\n", color, index);
786 GDI_HEAP_UNLOCK( hPal );
790 /***********************************************************************
791 * X11DRV_PALETTE_LookupSystemXPixel
793 static int X11DRV_PALETTE_LookupSystemXPixel(COLORREF col)
795 int i, best = 0, diff = 0x7fffffff;
796 int size = X11DRV_DevCaps.sizePalette;
799 for( i = 0; i < size && diff ; i++ )
801 if( i == NB_RESERVED_COLORS/2 )
803 int newi = size - NB_RESERVED_COLORS/2;
807 r = COLOR_sysPal[i].peRed - GetRValue(col);
808 g = COLOR_sysPal[i].peGreen - GetGValue(col);
809 b = COLOR_sysPal[i].peBlue - GetBValue(col);
813 if( r < diff ) { best = i; diff = r; }
816 return (X11DRV_PALETTE_PaletteToXPixel)? X11DRV_PALETTE_PaletteToXPixel[best] : best;
819 /***********************************************************************
820 * X11DRV_PALETTE_FormatSystemPalette
822 static void X11DRV_PALETTE_FormatSystemPalette(void)
824 /* Build free list so we'd have an easy way to find
825 * out if there are any available colorcells.
828 int i, j = X11DRV_PALETTE_firstFree = NB_RESERVED_COLORS/2;
830 COLOR_sysPal[j].peFlags = 0;
831 for( i = NB_RESERVED_COLORS/2 + 1 ; i < 256 - NB_RESERVED_COLORS/2 ; i++ )
832 if( i < COLOR_gapStart || i > COLOR_gapEnd )
834 COLOR_sysPal[i].peFlags = 0; /* unused tag */
835 X11DRV_PALETTE_freeList[j] = i; /* next */
838 X11DRV_PALETTE_freeList[j] = 0;
841 /***********************************************************************
842 * X11DRV_PALETTE_CheckSysColor
844 static BOOL X11DRV_PALETTE_CheckSysColor(COLORREF c)
847 for( i = 0; i < NB_RESERVED_COLORS; i++ )
848 if( c == (*(COLORREF*)(COLOR_sysPalTemplate + i) & 0x00ffffff) )
853 /***********************************************************************
854 * X11DRV_PALETTE_SetMapping
856 * Set the color-mapping table for selected palette.
857 * Return number of entries which mapping has changed.
859 int X11DRV_PALETTE_SetMapping( PALETTEOBJ* palPtr, UINT uStart, UINT uNum, BOOL mapOnly )
862 int prevMapping = (palPtr->mapping) ? 1 : 0;
863 int index, iRemapped = 0;
866 /* reset dynamic system palette entries */
868 if( !mapOnly && X11DRV_PALETTE_firstFree != -1)
869 X11DRV_PALETTE_FormatSystemPalette();
871 /* initialize palette mapping table */
873 mapping = HeapReAlloc( GetProcessHeap(), 0, palPtr->mapping,
874 sizeof(int)*palPtr->logpalette.palNumEntries);
875 if(mapping == NULL) {
876 ERR("Can not allocate new mapping -- memory exausted!");
879 palPtr->mapping = mapping;
881 for( uNum += uStart; uStart < uNum; uStart++ )
886 switch( palPtr->logpalette.palPalEntry[uStart].peFlags & 0x07 )
888 case PC_EXPLICIT: /* palette entries are indices into system palette */
889 index = *(WORD*)(palPtr->logpalette.palPalEntry + uStart);
890 if( index > 255 || (index >= COLOR_gapStart && index <= COLOR_gapEnd) )
892 WARN("PC_EXPLICIT: idx %d out of system palette, assuming black.\n", index);
897 case PC_RESERVED: /* forbid future mappings to this entry */
898 flag |= PC_SYS_RESERVED;
901 default: /* try to collapse identical colors */
902 index = COLOR_PaletteLookupExactIndex(COLOR_sysPal, 256,
903 *(COLORREF*)(palPtr->logpalette.palPalEntry + uStart));
908 if( X11DRV_PALETTE_firstFree > 0 && !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) )
911 index = X11DRV_PALETTE_firstFree; /* ought to be available */
912 X11DRV_PALETTE_firstFree = X11DRV_PALETTE_freeList[index];
914 color.pixel = (X11DRV_PALETTE_PaletteToXPixel) ? X11DRV_PALETTE_PaletteToXPixel[index] : index;
915 color.red = palPtr->logpalette.palPalEntry[uStart].peRed << 8;
916 color.green = palPtr->logpalette.palPalEntry[uStart].peGreen << 8;
917 color.blue = palPtr->logpalette.palPalEntry[uStart].peBlue << 8;
918 color.flags = DoRed | DoGreen | DoBlue;
919 TSXStoreColor(display, X11DRV_PALETTE_PaletteXColormap, &color);
921 COLOR_sysPal[index] = palPtr->logpalette.palPalEntry[uStart];
922 COLOR_sysPal[index].peFlags = flag;
923 X11DRV_PALETTE_freeList[index] = 0;
925 if( X11DRV_PALETTE_PaletteToXPixel ) index = X11DRV_PALETTE_PaletteToXPixel[index];
928 else if ( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
930 index = X11DRV_PALETTE_ToPhysical( NULL, 0x00ffffff &
931 *(COLORREF*)(palPtr->logpalette.palPalEntry + uStart));
935 /* we have to map to existing entry in the system palette */
937 index = COLOR_PaletteLookupPixel(COLOR_sysPal, 256, NULL,
938 *(COLORREF*)(palPtr->logpalette.palPalEntry + uStart), TRUE);
940 palPtr->logpalette.palPalEntry[uStart].peFlags |= PC_SYS_USED;
942 if( X11DRV_PALETTE_PaletteToXPixel ) index = X11DRV_PALETTE_PaletteToXPixel[index];
946 if( !prevMapping || palPtr->mapping[uStart] != index ) iRemapped++;
947 palPtr->mapping[uStart] = index;
949 TRACE("entry %i (%lx) -> pixel %i\n", uStart,
950 *(COLORREF*)(palPtr->logpalette.palPalEntry + uStart), index);
956 /***********************************************************************
957 * X11DRV_PALETTE_UpdateMapping
959 * Update the color-mapping table for selected palette.
960 * Return number of entries which mapping has changed.
962 int X11DRV_PALETTE_UpdateMapping(PALETTEOBJ *palPtr)
964 int i, index, realized = 0;
966 if (!X11DRV_DevCaps.sizePalette)
969 for( i = 0; i < 20; i++ )
971 index = X11DRV_PALETTE_LookupSystemXPixel(*(COLORREF*)(palPtr->logpalette.palPalEntry + i));
973 /* mapping is allocated in COLOR_InitPalette() */
975 if( index != palPtr->mapping[i] ) { palPtr->mapping[i]=index; realized++; }
981 /**************************************************************************
982 * X11DRV_PALETTE_IsDark
984 BOOL X11DRV_PALETTE_IsDark(int pixel)
986 COLORREF col = X11DRV_PALETTE_ToLogical(pixel);
987 return (GetRValue(col) + GetGValue(col) + GetBValue(col)) <= 0x180;
990 #endif /* !defined(X_DISPLAY_MISSING) */